Whatsup with little red X's?

[Paz]

 I'm not sure this is the right place for this question but here it goes anyway:
 Why am I getting those little red X's where pictures are supposed to be on webpages and emails? I have 'show pictures' enabled in my settings.
 It's not all the time either but often enough for me to wonder what the heck is going on, here's an example:
 If I read a thread on this message board and back out of it, all the icons on the main page of the forum will be red X's unless I refresh the page, this didn't used to happen. Also if I get an email that includes pictures like the one from Surclaro, all the places where pictures should be are X's.
 Any ideas?

[Iroquois]

Eveyone gets those. It may be a case of the web server being busy or the images haven't been uploaded properly.

[Paz]

 Whew!!
 I thought it was just me!